5443865856 has 648 divisors, whose sum is σ = 19606309632. Its totient is φ = 1437696000.

The previous prime is 5443865821. The next prime is 5443865879. The reversal of 5443865856 is 6585683445.

5443865856 is a `hidden beast` number, since 54 + 4 + 3 + 8 + 6 + 585 + 6 = 666.

It is a super-2 number, since 2×5443865856² = 59271350916245225472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 132777196 + ... + 132777236.

Almost surely, 2^5443865856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5443865856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9803154816).

5443865856 is an abundant number, since it is smaller than the sum of its proper divisors (14162443776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5443865856 is a wasteful number, since it uses less digits than its factorization.

5443865856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 101 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 54.

The square root of 5443865856 is about 73782.5579388516. The cubic root of 5443865856 is about 1759.1483758636.

The spelling of 5443865856 in words is "five billion, four hundred forty-three million, eight hundred sixty-five thousand, eight hundred fifty-six".